could someone please explain to me how blood pressure is maintained? what have it got to do next to the capillaries and that? the mass or something? would really appreciate a detailed description
thanks
There are 2 things that determine blood pressure, only just like any other fluid contained by a pipe: the driving force (ie, the pressure the heart puts on the blood when it pumps), and the resistance of the pipes. The resistance of the vessels is determines by 2 primary things: size (higher resistance in smaller vessels) and compliance (stretchiness). All blood vessel have a muscular and a fibrous deposit. The muscular layer actively controls how much the vessel dilates, and the fibrous blanket holds it together.
have a look at nhs direct its well brought-up
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